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Residual Stress Distribution in an Al2O3-Ni Joint Bonded with a Composite Layer

Published online by Cambridge University Press:  10 February 2011

X.-L. Wang ,
B. H. Rabin ,
R. L. Williamson ,
H. A. Bruck  and
T. R. Watkins
X.-L. Wang
Affiliation:
Oak Ridge National Laboratory, Oak Ridge, TN 37831-6064
B. H. Rabin
Affiliation:
Idaho National Engineering Laboratory, Idaho Falls, ID 83415-2218
R. L. Williamson
Affiliation:
Idaho National Engineering Laboratory, Idaho Falls, ID 83415-2218
H. A. Bruck
Affiliation:
Idaho National Engineering Laboratory, Idaho Falls, ID 83415-2218
T. R. Watkins
Affiliation:
Oak Ridge National Laboratory, Oak Ridge, TN 37831-6064
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Abstract

Neutron diffraction was used to investigate the residual stress distribution in an axisymmetric A12O3-Ni joint bonded with a 40 vol%A12O3-60 vol%Ni composite layer. A series of measurements was taken along the axis of symmetry through the A12O3 and composite layers. It is shown that after taking into account the finite neutron diffraction sampling volume, both the trends and peak values of the experimentally determined strain distribution were in excellent agreement with calculations of a simple finite element model, where the rule-of-mixtures approach was used to describe the constitutive behavior of the composite interlayer. In particular, the predicted steep strain gradient near the interface was confirmed by the experimental data.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 434: Symposium U – Layered Materials for Structural Applications , 1996 , 177
Copyright
Copyright © Materials Research Society 1996

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